Obviously, before our calibrations team can really dig into a new platform, we have to know what we’re starting with. With that in mind, we needed to get the 2020 Jeep® Wrangler® JL on our Superflow chassis dyno to see just how much that little 2.0L 4-cylinder turbo can produce. With the baselines recorded we can move on to the lift, tires, bumpers, winch and SC branded wrap for this Wrangler® JL. It’s got to be dressed to impress when our marketing and event campaigns kick off, but first we want to talk horsepower.
On the Superflow chassis dyno in our Ogden, UT facility, the completely stock 2.0L Wrangler® JL made 231hp and 310ft-lbs of torque. Jeep® rates this 2.0L engine at 270hp/290tq flywheel. Taking a 15% drive train loss into consideration (229.5hp), our 231 wheel horsepower seems pretty accurate. 310lft-lbs of torque is quite surprising however. Jeep® is either very conservative on their 290tq claim or that quick spooling turbocharger just runs really strong here. We expected to see closer to 245ft-lbs at the tire from this power plant, so 310ft-lbs is great!
Paired with the 8-speed automatic and the factory Rubicon 4.10 gears, this combination is actually quite sporty around town. There is some slight lag off idle, but that can be taken care of easily with the addition of our Amp’d Throttle Booster (p/n 48868-JT). While the Amp’d doesn’t add any power to the 2.0L turbo engine, it definitely brings that power band on sooner making it feel even more peppy for day to day driving. For an interesting comparison, we dyno’d our 2019 Wrangler® JL with the 3.6L V6, and it produced 204hp/220tq in stock form. So those of you concerned about performance from a ‘little 4-cylinder’, you may need to take a second look at Jeep’s® 2.0L engine. With our up and coming tuning support for the 2.0L Turbo, is that naturally aspirated V6 going to become a thing of the past? We don’t think so, but the 4-cylinder will be holding it’s own in the market for sure.